Can this be upgraded to the latest version of MacOS?
Hi there. The 2011 model can update to 10.13 High Sierra but not Mojave.
Note that there is a hack to put Mojave on these. I tried it on my 15" 2011 with discrete graphics and it was a mess. The issues I ran into seem to be specific to the video card on the early 2011 15" units. I suspect the integrated graphics on the 13" would fare better (as would be, allegedly, the late-2011 15" MBPs).
All the hack does is patch the Mojave installer to restore the graphics drivers that Apple removed. I wouldn’t count on this working down the road, however.
TBH, if it were me - I would pay the extra $100 for the 2012. I’m betting it won’t (at least officially) work with 10.15, but it’ll at least give you an extra year of service over the 2011.
Thank you both for the info!